托福写作是在备考时让很多人头疼的一项，大家除了平时自己练习之外，也要多多的参考范文来积累素材，让脑子有一个正确思路的模型，并在日后在托福写作考试中加以修改运用。今天为大家准备的托福写作范文是细胞与温度。
Cells and Temperature
Cells cannot remain alive outside certain limits of temperature and much narrower limits mark the boundaries of effective functioning. Enzyme systems of mammals and birds are most efficient only within a narrow range around 37C;a departure of a few degrees from this value seriously impairs their functioning. Even though cells can survive wider fluctuations the integrated actions of bodily systems are impaired. Other animals have a wider tolerance for changes of bodily temperature.
For centuries it has been recognized that mammals and birds differ from other animals in the way they regulate body temperature. Ways of characterizing the difference have become more accurate and meaningful over time, but popular terminology still reflects the old division into “warm-blooded” and “cold-blooded” species; warm-blooded included mammals and birds whereas all other creatures were considered cold- blooded. As more species were studied, it became evident that this classification was inadequate.
以上就是小编为大家整理的托福写作范文之细胞与温度的内容，希望对大家托福备考带来帮助。更多资料请继续关注百利天下考试。
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